get_invoice_total_x_request

THE RISK

Low Risk

Why get_invoice_total_x_request needs a policy

The tool retrieves or queries a configuration value (maximum record count for a request type). This is a read-only operation with no side effects on data or financial transactions. Despite the payment-related context of the AP2 server, this specific tool only fetches metadata about request constraints, making it a Read category tool with low severity.

From the tool's definition Tool name 'get_invoice_total_x_request' and description 'Max number of records allowed per FECAESolicitar request' indicate retrieval of a configuration parameter or limit value, not modification or execution of payment operations.

Documented attack patterns abuse exactly the kind of access get_invoice_total_x_request gives an agent:

POLICY

How to control get_invoice_total_x_request

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for get_invoice_total_x_request:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_invoice_total_x_request": {}
  }
}

get_invoice_total_x_request is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Mcp Ap2 — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

Related tools and policies

More Mcp Ap2 tools

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_invoice_total_x_request

What does the get_invoice_total_x_request tool do? +

Max number of records allowed per FECAESolicitar request (FECompTotXRequest). It is categorised as a Read tool in the Mcp Ap2 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_invoice_total_x_request? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for get_invoice_total_x_request: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Mcp Ap2. Nothing to install.

What risk level is get_invoice_total_x_request? +

get_invoice_total_x_request is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_invoice_total_x_request? +

Yes. Add a rate_limit block to the get_invoice_total_x_request rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block get_invoice_total_x_request completely? +

Set action: deny in the PolicyLayer policy for get_invoice_total_x_request. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides get_invoice_total_x_request? +

get_invoice_total_x_request is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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